Apparatus adapted for clamping together timbers, etc.



May '21, 1929. T H K 1,114,139

APPARATUS ADAPTBD FOR CLAMPING TOGETHER TIMBERS, ETC

Filed March 30, 1922 u m v dZ ZZ UNITED STATES. PATENTIOFFICE.

Patented May 21, 1929.

TAMIS 'coRNELIs SCHENK, or DETROIT; MICHIGAN.

APPARATUS nDAPTEnFoncLAMr rnG TOGETHER 'rrmmns. mo.

a plication filed March 30,1922. Serial No. 548,247.

My invention relates particularly to an apparatus by means of which timbers, poles, etc. may be fastened togetherin an advantageous manner. p

The object of my-invention is .to provide an apparatus by means of which timbers, poles, etc., as, for'example, when used in scaffolding for the construction of buildings, may be fastened together without the necessity of cutting them to a particular size and without the waste of labor and materials caused by the use of spikes, nails or screws therein. A further object is to provide a clamping device of this kind which may be manufactured at a minimum cost.

Further objects of my invention will ap pear in the detailed description hereinafter:

Many embodiments of my invention are possible but I have shown only certain formsthereof in the accompanying drawings in which v Figure 1 is a side elevation of timbers fastened together in accordance with one form of clamping device made in accordance with my invention and Fig. 2 is a plan view of the same showing the timbers in cross-section;

Fig. 3 is a side elevation of timbers fastened with another form of locking device embodying my invention;

Fig. 4 is a plan view of the same showing the timbers in cross-section and Fig. 5 is a plan view of a spanner used with my clamping device.

In the drawings, referring first to Figs. 1 and 2, I have shown two timbers 1 and 2 which areoverlapped to any desired'degree to give the required total length thereof.

They are fastened together with clamping devices, each of which is comprised of a U- shaped member 3 made of iron having legs 4. These are bent upwardly at their outer ends to form oblique portions 5, which are provided at their outer ends with bills 6 acting as stops for a locking member 7 com prised of a rectangular sheet of iron. As will be seen in Fig. 1, the locking member 7 is first applied in the position shown in the upper portion of said figure and then is turned by a spanner 8 having a handle 9 and a slot 10 fitting over the locking piece so as to rotate the same in the position shown in the lower portion of Fig. 1.

In the modified form of my invention shown in Figs. 3 and 4 there are two timbers 11 and 12 wh ch are overlapped in the same manner as previously described in connection with the other form of my invention. These timbers, a1'e' .thensecured together with clamping devices, each of whiclicom'- prises aqU-shaped member 18 made of iron having legs '14; which are bent laterally near their outerends so as to produce laterally extended portions 15 providing recesses 16 to receive a rotary locking piece 17 in the form of a fiat sheet of iron which is supported at one edge for rotation thereof in books '18 carried on. the outer ends of the legs 14. The hooks 18, furthermore, have upwardly directed bills 19 which serve-as-stops in the turning movement of the locking piece 17.

In the utilization of my invention, as exemplified in Figs. 1 and 2, the timbers having been overlapped in the manner described, the

,U-shaped clamping members are located 1 around the same in the position shown at the upper part of Fig. 1. r The upwardly directed portions 5 of the U-shaped member provide ample space for the initial insertion of the locking pieces. The locking pieces 7 are then turned into the position shown in the lower portion of said figure, until they rest againstthe bills 6, by the application of the spanner 8 which is removed when the locking piece has been rotated into its clamping position, as shown at the bottom portion of Fig. 1.

The form of my invention shown in Figs. 3 and 4 operates in the same manner. In this I instance, however, the legs 14 have laterally extending portions to provide space permitting the initial insertion and rotation of the locking piece 17 with the aid of the spanner 8 until they finally rest against the bills 19 as shown in the lower portion of Fig. 3.

While I have described by invention above I in detail, many changes may be made within the scope of my invention and appended claims.

I cla1m:.

1. A clamping device comprising a U shaped member provided with legs which" i are bent to provide laterally extended portions and having hooks terminating in bills at the outer ends thereof, and a locking piece arranged to rotate in said hooks betweenthe lateral bends in the legs and rest in looking position against said bills.

2. A clamping device comprising a U shaped member provided with legs which are bent to provide laterally extended portions and having hooks terminating in bills at the outer ends thereof, and a flat locking piece arranged to rotate in said hooks between the lateral bends in the legs and rest in looking position with its side against said bills.

A clamping device comprising a U- shaped member having hooks terminating in bills at the outer ends thereof, a Wide flat locking piece arranged to rotate in said hooks and rest in locking position against said bills, said bills being ofa length substantially equal to the Width of said locking piece.

4%. The combination With an article to be clamped of a clamping device comprising a U shaped member having hooks terminating 15 bills contacting with the adjacent portion of 20 the locking piece substantially up to the part of thelocking piece which contacts with said article.

In testimony that I claim the foregoing, I

have hereunto set my hand this 14th day of 2 March, 1922 TAMISCQ SGHENK. 

